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27/09/2025 10:45 am  

Posted by: @jamespa
↑

According to the website the capacity is 40kWh, [....] Whilst charging plus heating you would be drawing 2.3+40/7 = 8kW

8kW is still less than an electric shower,
but drawing that 33A for 7 hours is hugely more significant of course.

And @wully also has a storage battery, of a capacity we don't yet know.

I would be very interested to understand how these technologies have been amalgamated to provide both steady heat and an affordable running cost.

 

Posted by: @jamespa
↑

Weight 375kg with an area 0.6mx0.6m is 1000kg/sq m, which well exceeds what I understand to be the typical design loading of between 1 and 2 kN/sq m

That weight loading is similar to that of my thermal store, which is positioned on an upstairs/suspended floor.

But then I'm in a 1930s farmhouse, with floor joists that were overspecc'd by today's standards.

I have a copy of the Span-Tables from Part-A of the Building Regs.
So if @wully would start his new topic (please!) then I can check what joist sizes would be suitable.
The usual trick is to add an additional joist between two existing ones.


Save energy... recycle electrons!


   
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